AD7862BRZ-10REEL

Overview

The AD7862BRZ-10REEL is a dual 12-bit successive approximation analog-to-digital converter (ADC) fabricated in LC2MOS technology. It operates from a single +5 V supply and features two independent ADCs with simultaneous sampling capabilities across four input channels grouped into two channels (A and B). The device includes an internal +2.5 V reference, track/hold amplifiers, and a high-speed parallel interface. Key electrical parameters include a maximum conversion time of 3.6 μs, a throughput rate of 250 kSPS, and a typical power dissipation of 60 mW in normal mode. It offers overvoltage protection on analog inputs and supports bipolar ±10 V or unipolar input ranges depending on the specific variant.

Feature Summary

• Simultaneous sampling and conversion of two channels to preserve relative phase information
• High-speed parallel data interface compatible with standard microprocessors and DSPs
• Integrated internal +2.5 V voltage reference with external reference capability
• Automatic power-down mode for reduced consumption between conversions

Applications

• AC motor control systems
• Uninterrupted power supplies (UPS)
• Data acquisition systems
• Communications equipment

Procurement Notes

Verify the specific suffix 'REEL' indicates tape-and-reel packaging when sourcing. Confirm the '-10' designation corresponds to the ±10 V input range version. Check manufacturer documentation for current lifecycle status, as older Analog Devices components may be subject to obsolescence notices. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS process.

Selection Notes

Select this component when simultaneous channel sampling is required for phase-sensitive applications. Choose the -10 variant for ±10 V input signals; use -3 for ±2.5 V or -2 for 0–2.5 V ranges. Consider the parallel interface requirements against available microcontroller GPIO resources. Evaluate power constraints if battery operation is critical, leveraging the auto-sleep mode.

Part Context

This part belongs to the AD7862 family of dual 12-bit ADCs from Analog Devices. It is pin-compatible with the 14-bit AD7863 for potential future upgrades. The BRZ suffix denotes a lead-free RoHS-compliant SOIC-28 package. The REEL suffix specifies the bulk reel packaging format for automated assembly.

Replacement Considerations

The AD7863 is a 14-bit pin-compatible upgrade option within the same family. For different resolution or interface needs, consider the AD7656 series for multi-channel simultaneous sampling or the AD7934 for serial interfaces.